Simple really. Works like a he granade, except if u are in the pool of damage u catch on fire, the same way a flame thrower would. And it would be in the knife slot like the dew nade.
Cost: 1 credit less the the dew nades....dont know the price
Advantages:
Cool
Realistic
people on fire can spread fire
Disadvantages:
Flame Armor
Must aim acuratly, blows up on impact with anything
can catch self on fire if thrown to close
people on fire can spread fire